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Current position: PRODUCTS  /   SWITCHGEARS  /   SF6 Gas insulated switchgears/RMU  /  

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GLX-24 Series SF6 Insulated Ring Main Unit

GLX-24 Series SF6 Insulated Ring Main Unit

GLX-24 Series SF6 Insulated Ring Main Unit

1.air temperature: maximum temperature :+40oC;minimum temperature:-35oC 2.humidity: monthly average humidity 95%; daily average humidity 90% 3.altitude above sea level: maximum installation altitude: 2500m 4.ambient air not apparently polluted by
Published in2018-09-01
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Detailed description

Product Description

GLX24 series Ring Main Unit is an extensible, SF6 insulated switchgear, with rated voltage of 12/24&36 KV.??GLX24 unit type SF6 ring net cabinet with SF6 load switch as main switch, for whole cabinet is suitable for electric distribution automation and compact also expandable metal close switchgear. It characters in its simple structure, flexible operation, reliable interlocking and convenient installation etc, which can provide the satisfactory technical projects both for different application occasions and user. With the adoption of sensor technology and the protection relay up to date, plus the advanced technology and flexible assembly project, GLX24 unit type SF6 ring net cabinet can completely meet the requirement of continuously variable market. It can take self-produced RLS-40.5 load switch or SFG type SF6 load switch by ABB; also according to user's demand can be assembled with the internationally top-ranking, RCB series vacuum circuit breaker with permanent magnetic mechanism made by AREVA,or HD4 type SF6 circuit breaker made by AREVA, or HD4 type SF6 circuit breaker made by ABB, or with our VS1-12 type vacuum circuit breaker with permanent magnetic mechanism. Operational methods for the main switch inside ring main unit can be either manual electric power driven. And it can meet the requirement of "four controls" when matched with FTU and RTU.

Service environment:
1.air temperature: maximum temperature :+40oC;minimum temperature:-35oC

2.humidity: monthly average humidity 95%; daily average humidity 90%
3.altitude above sea level: maximum installation altitude: 2500m
4.ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
5.no frequent violent shake.



Technical parameters

Table 1: Technical data for 12KV Ring Main Unit

Description
Unit LBS unit Switch-fuse unit VCB unit Busbar subsection unit
Rated voltage
KV 12 12 12 12
Power frequency withstand voltage(1 min) phase to ? phase/earth KV 42 42 42 42
Across the isolating distance KV 48 48 48 48
Impulse withstand voltage phase to ? phase/earth KV 75,(95)* 75,(95)* 75,(95)* 75,(95)*
Across the isolating distance KV 85,(110)* 85,(110)* 85,(110)* 85,(110)*
Rated frequency Hz 50,60 50,60 50,60 50,60
Rated current A 630 1 630 630
Rated short circuit breaking current KA

2 20,(25)*
Rated short time withstand current KA/s 20/3 (20/4,25/1)*
20/3 (20/4,25/3)* 20/3 (20/4,25/1)*
Rated peak withstand current KA 50,(63)*
50,(63)* 50,(63)*
Rated short circuit making current KA 50,(63)* 2 50,(63)* 50,(63)*
Rated transfer current A
1800

Rated active load breaking current A 630

630
Rated closed loop breaking current A 630

630
5% raed active load braeking current A 31.5

31.5
Rated operation sequence


0-0. 3s-CO-180s-CO
Mechnical lifetime Ops 5000 5000 10000 5000
Eletrical?lifetime
E3
E2 E3
Thickness of stainless steel mm 3.0
Rated SF6 pressure kPa 30(at 20oC,101.3kPa)
Annual leakage rate ≤0.02%
Water treatment test 12kV 24 hours(at 30 kPa under the water
Internal arc test 20kA 1s
Protection degree Gas tank IP 67
Fuse holder IP 67
RMU enclosure IP 4%

Table 2: Technical data for 24KV/36KV Ring Main Unit

NO. Item Unit Parameter
1
Rated voltage KV 24 36
2
Rated frequency HZ 50/60
3
Rated current A 630/800
4
1 min power frequency withstand voltage
Wet
KV 70 95

dry
KV 80 110
5
Lightning impulse withstand voltage KV 170 185
6
Rated short circuit breaking current (peak) KA 195 215
7
Rated active load and close circuit breaking current A 400/630
8
Rated transferring current A 1200 1000
9
Rated short circuit making current(peak) KA 63 63
10
Rated cable off load A 50
11
Transformer off load A 16
12
Rated withstand current (peak) KA 63
13
Short time withstand current(2s) KA 25
14
Mechanism life times 2000 2000

Structure




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